西藏拉萨地区太阳紫外辐射观测  

Measurements of Solar UV Radiation in Lhasa,Tibet

作　　者：赵地[1] 诺桑[1] 措加旺姆[1] 晋亚铭 段杰[1] 周毅 ZHAO Di, NORSANG Gelsor, TSOJA Wangmu, JIN Yaming, DUAN Jie, ZHOU Yi(Laboratory of Solar Ultraviolet Radiation, Tibet University, Lhasa 850000, Chin)

机构地区：[1]西藏大学太阳紫外线实验室,西藏拉萨850000

出　　处：《大气与环境光学学报》2018年第2期81-87,共7页Journal of Atmospheric and Environmental Optics

基　　金：国家自然科学基金;41475139;西藏大学珠峰学者人才发展支持计划;西藏大学高水平人才培养计划;2015-GSP-023~~

摘　　要：利用NILU-UV紫外辐射探测仪,在2015年1月至2016年12月期间,对西藏拉萨太阳紫外辐射及其影响因子(云、臭氧等)进行观测。结果显示,观测期间紫外辐射平均日剂量为1.24 MJ·m^(-2)·d^(-1),其中夏季最高,为1.57MJ·m^(-2)·d^(-1),冬季最低,为0.87 MJ·m^(-2)·d^(-1).拉萨当地正午时分(05:25～06:25 UTC)平均紫外线指数为8.34,夏季平均值达到11.53,冬季为5.02。紫外线指数瞬时最大值为20.78,紫外辐射日剂量最大值为2.58 MJ·m^(-2),两者均出现在2016年8月。夏季拉萨云况变化复杂,出现云增强地面紫外辐射的现象。观测期间拉萨当地正午小时平均臭氧柱总量为264.2 DU,臭氧含量变化幅度不大。The solar UV radiation and its influence factors （cloud, ozone, etc.） in Lhasa, Tibet, China were observed during the period of January 2015~December 2016 by using the NILU-UV Irradiance Meters. The results show that the daily mean UV dose during the period was 1.24 MJ·m^-2·d^-1, in which maximum value in summer （from June to August） was 1.57 MJ·m^-2·d^-1, minimum value in winter （from December to Feburary） was 0.87 MJ·m^-2·d^-1. The average local noon-hour （05：25~06：25 UTC） UV index （UVI） was 8.34 during the period, in which the average value in summer was 11.53, and 5.02 for the winter. UVI maximum value （20.78） and daily UV dose maximum value （2.58 MJ·m^-2） both arose in August, 2016. There was a phenomenon that the UV radiation was strengthened in summer as the cloud exchanged richly. The total ozone column（TOC） almost had no change during measurement, and the average local noon-hour TOC value was 264.2 DU.

关 键 词：太阳紫外辐射 拉萨 紫外线指数 臭氧 

分 类 号：P422.62[天文地球—大气科学及气象学]